RazorDocument - [0..14)::14 - [@addTagHelper ]
    MarkupBlock - [0..14)::14
        MarkupTextLiteral - [0..0)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
        CSharpCodeBlock - [0..14)::14
            RazorDirective - [0..14)::14
                CSharpTransition - [0..1)::1 - Gen<None> - SpanEditHandler;Accepts:None
                    Transition;[@];
                RazorDirectiveBody - [1..14)::13
                    RazorMetaCode - [1..13)::12 - Gen<None> - SpanEditHandler;Accepts:None
                        Identifier;[addTagHelper];
                    CSharpCodeBlock - [13..14)::1
                        MarkupTextLiteral - [13..14)::1 - [ ] - Gen<None> - SpanEditHandler;Accepts:None
                            Whitespace;[ ];
                        CSharpStatementLiteral - [14..14)::0 - [] - Gen<AddTagHelper:{;;;} [RZ1018(1:0,1 [13] ), RZ1036(14:0,14 [1] )]> - SpanEditHandler;Accepts:AnyExceptNewline
                            Marker;[];
        MarkupTextLiteral - [14..14)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
